So currently I have an iPhone 4 and my plan will run out shortly, later in the year. My question is, is it really worth of the upgrade from a iPhone 4 to 4S? I think I would you Siri a bit for simply setting homework/tasks, which is one of the main upgrades, but what about the specifications of the iPhone 4? Will they be sufficient enough for the next couple of years? And will Apple continue to provide support to the iPhone 4? Or is Siri just more of a gimic you only use it when you in your privacy of your home so you don't look like a loser? And I don't use the camera all that much. Thanks.